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codecparsers: add JPEG parser.

Browse source 
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Wind Yuan 2012-02-10 00:21:04 +08:00 committed by Gwenole Beauchesne
parent 5d75cc4c6f
commit c350a0809d
6 changed files with 821 additions and 1 deletions
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24
configure.ac
View file

@ -247,6 +247,7 @@ AC_DEFINE_UNQUOTED(USE_CODEC_PARSERS, $USE_CODEC_PARSERS,
[Defined to 1 if GStreamer codec parsers are used])
AM_CONDITIONAL(USE_CODEC_PARSERS, test $USE_CODEC_PARSERS -eq 1)
USE_LOCAL_CODEC_PARSERS=0
if test "$enable_codecparsers" = "yes"; then
AC_CACHE_CHECK([for GstH264SliceHdr::n_emulation_prevention_bytes],
ac_cv_have_gst_h264_slice_hdr_epb_count, [
@ -264,6 +265,22 @@ AC_CACHE_CHECK([for GstH264SliceHdr::n_emulation_prevention_bytes],
CFLAGS="$saved_CFLAGS"
LIBS="$saved_LIBS"
])
AC_CACHE_CHECK([for JPEG parser],
ac_cv_have_gst_jpeg_parser, [
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $GST_CFLAGS $GST_CODEC_PARSERS_CFLAGS"
saved_LIBS="$LIBS"
LIBS="$LIBS $GST_LIBS $GST_CODEC_PARSERS_LIBS"
AC_TRY_COMPILE(
[#include <gst/codecparsers/gstjpegparser.h>],
[GstJpegImage jpeg_image;],
[ac_cv_have_gst_jpeg_parser="yes"],
[ac_cv_have_gst_jpeg_parser="no" USE_LOCAL_CODEC_PARSERS=1]
)
CFLAGS="$saved_CFLAGS"
LIBS="$saved_LIBS"
])
fi
if test "$ac_cv_have_gst_h264_slice_hdr_epb_count" = "yes"; then
@ -271,6 +288,12 @@ if test "$ac_cv_have_gst_h264_slice_hdr_epb_count" = "yes"; then
[Defined to 1 if GstH264SliceHdr::n_emulation_prevention_bytes exists.])
fi
if test "$ac_cv_have_gst_jpeg_parser" = "yes"; then
AC_DEFINE_UNQUOTED(HAVE_GST_JPEG_PARSER, 1,
[Defined to 1 if JPEG parser exists.])
fi
AM_CONDITIONAL(USE_LOCAL_CODEC_PARSERS, test $USE_LOCAL_CODEC_PARSERS -eq 1)
dnl Check for GStreamer interfaces
PKG_CHECK_MODULES([GST_INTERFACES],
[gstreamer-interfaces-$GST_MAJORMINOR >= $GST_PLUGINS_BASE_VERSION_REQUIRED]
@ -458,6 +481,7 @@ debian.upstream/libgstvaapi-glx.install.in
gst-libs/Makefile
gst-libs/gst/Makefile
gst-libs/gst/gstutils_version.h
gst-libs/gst/codecparsers/Makefile
gst-libs/gst/vaapi/Makefile
pkgconfig/Makefile
pkgconfig/gstreamer-vaapi-$GST_MAJORMINOR.pc:\

2
gst-libs/gst/Makefile.am
View file

@ -1,4 +1,4 @@
SUBDIRS = vaapi
SUBDIRS = codecparsers vaapi
gen_headers = gstutils_version.h
noinst_HEADERS = $(gen_headers)

46
gst-libs/gst/codecparsers/Makefile.am Normal file
View file

@ -0,0 +1,46 @@
noinst_LTLIBRARIES = \
libgstvaapi-codecparsers.la \
$(NULL)
libgstvaapi_codecparsers_cflags = \
-DGST_USE_UNSTABLE_API \
-I$(top_srcdir)/gst-libs \
$(GST_BASE_CFLAGS) \
$(GST_CFLAGS) \
$(NULL)
libgstvaapi_codecparsers_libs = \
$(GST_BASE_LIBS) \
$(GST_LIBS) \
$(NULL)
libgstvaapi_codecparsers_source_c = \
gstjpegparser.c \
$(NULL)
libgstvaapi_codecparsers_source_h = \
gstjpegparser.h \
$(NULL)
libgstvaapi_codecparsers_source_priv_h = \
$(NULL)
libgstvaapi_codecparsers_la_SOURCES = \
$(libgstvaapi_codecparsers_source_c) \
$(libgstvaapi_codecparsers_source_priv_h) \
$(NULL)
libgstvaapi_codecparsers_la_CFLAGS = \
$(libgstvaapi_codecparsers_cflags) \
$(NULL)
libgstvaapi_codecparsers_la_LIBADD = \
$(libgstvaapi_codecparsers_libs) \
$(NULL)
libgstvaapi_codecparsers_la_LDFLAGS = \
$(GST_ALL_LDFLAGS) \
$(NULL)
# Extra clean files so that maintainer-clean removes *everything*
MAINTAINERCLEANFILES = Makefile.in

625
gst-libs/gst/codecparsers/gstjpegparser.c Normal file
View file

@ -0,0 +1,625 @@
/*
* gstjpegparser.c - JPEG parser for baseline
*
* Copyright (C) 2011 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "gstjpegparser.h"
#include <string.h>
#include <gst/base/gstbytereader.h>
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT ensure_debug_category()
static GstDebugCategory *
ensure_debug_category (void)
{
static gsize cat_gonce = 0;
if (g_once_init_enter (&cat_gonce)) {
gsize cat_done;
cat_done = (gsize) _gst_debug_category_new ("codecparsers_jpeg", 0,
"GstJpegCodecParser");
g_once_init_leave (&cat_gonce, cat_done);
}
return (GstDebugCategory *) cat_gonce;
}
#else
#define ensure_debug_category() /* NOOP */
#endif /* GST_DISABLE_GST_DEBUG */
#define DEBUG_PRINT_COMMENT 0
#define CHECK_FAILED(exp, ret) G_STMT_START { \
if (!(exp)) { \
result = ret; \
goto wrong_state; \
} \
} G_STMT_END
#define JPEG_RESULT_CHECK(result) G_STMT_START { \
if ((result) != GST_JPEG_PARSER_OK) { \
goto wrong_state; \
} \
} G_STMT_END
#define READ_UINT8(reader, val) G_STMT_START { \
if (!gst_byte_reader_get_uint8 ((reader), &val)) { \
GST_WARNING ("failed to read uint8"); \
goto failed; \
} \
} G_STMT_END
#define READ_UINT16(reader, val) G_STMT_START { \
if (!gst_byte_reader_get_uint16_be ((reader), &val)) { \
GST_WARNING ("failed to read uint16"); \
goto failed; \
} \
} G_STMT_END
#define READ_BYTES(reader, buf, length) G_STMT_START { \
const guint8 *vals; \
if (!gst_byte_reader_get_data(reader, length, &vals)) { \
GST_WARNING("failed to read bytes, size:%d", length); \
goto failed; \
} \
memcpy(buf, vals, length); \
} G_STMT_END
/* Table B.1: marker code assignments */
enum JPEG_MARKER
{
GST_JPEG_SOF0 = 0xC0, /* Frame Profile, Baseline */
GST_JPEG_SOFF = 0xCF,
GST_JPEG_DHT = 0xC4, /* Define Huffman Table */
GST_JPEG_DAC = 0xCC, /* Define Arithmetic Coding conditioning */
GST_JPEG_RST0 = 0xD0, /* Restart with modulo 8 */
GST_JPEG_RST7 = 0xD7,
GST_JPEG_SOI = 0xD8, /* Start Of Image */
GST_JPEG_EOI = 0xD9, /* End Of Image */
GST_JPEG_SOS = 0xDA, /* Start Of Scan */
GST_JPEG_DQT = 0xDB, /* Define Quantization Table */
GST_JPEG_DNL = 0xDC, /* Define Num of Lines */
GST_JPEG_DRI = 0xDD, /* Define Restart Interval */
GST_JPEG_APP0 = 0xE0, /* Application segments */
GST_JPEG_APPF = 0xEF,
GST_JPEG_COM = 0xFE, /* Comments */
};
static gboolean jpeg_parse_to_next_marker (GstByteReader * reader,
guint8 * marker);
/* CCITT T.81, Annex K.1 Quantization tables for luminance and chrominance components */
/* only for 8-bit per sample image*/
static const guint8 default_quant_luma_zigzag[64] = {
0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x27,
0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0xa8,
0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0xb5, 0x57,
0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
};
static const guint8 default_quant_chroma_zigzag[64] = {
0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
};
/* Table K.3: typical Huffman tables for 8-bit precision luminance and chrominance */
static const guint8 default_dc_luma_bits[16] = {
0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
};
static const guint8 default_dc_luma_vals[16] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
};
static const guint8 default_dc_chroma_bits[16] = {
0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0
};
static const guint8 default_dc_chroma_vals[16] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
};
static const guint8 default_ac_luma_bits[16] = {
0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 125
};
static const guint8 default_ac_luma_vals[256] = {
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa
};
static const guint8 default_ac_chroma_bits[16] = {
0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 119
};
static const guint8 default_ac_chroma_vals[256] = {
0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa
};
static gboolean
jpeg_parse_to_next_marker (GstByteReader * reader, guint8 * marker)
{
guint8 value;
while (gst_byte_reader_get_uint8 (reader, &value)) {
if (value != 0xFF)
continue;
while (value == 0xFF) {
READ_UINT8 (reader, value);
}
if (value == 0x00)
continue;
*marker = value;
return TRUE;
}
failed:
return FALSE;
}
static GstJpegParserResult
jpeg_parse_frame (GstJpegImage * image, const guint8 * buf, guint32 length)
{
GstByteReader bytes_reader = GST_BYTE_READER_INIT (buf, length);
GstJpegParserResult result = GST_JPEG_PARSER_OK;
guint8 val;
u_int i;
g_assert (image && buf && length);
READ_UINT8 (&bytes_reader, image->sample_precision);
READ_UINT16 (&bytes_reader, image->height);
READ_UINT16 (&bytes_reader, image->width);
READ_UINT8 (&bytes_reader, image->num_components);
CHECK_FAILED (image->num_components <= GST_JPEG_MAX_COMPONENTS,
GST_JPEG_PARSER_FRAME_ERROR);
for (i = 0; i < image->num_components; i++) {
READ_UINT8 (&bytes_reader, image->components[i].identifier);
READ_UINT8 (&bytes_reader, val);
image->components[i].horizontal_factor = (val >> 4) & 0x0F;
image->components[i].vertical_factor = (val & 0x0F);
READ_UINT8 (&bytes_reader, image->components[i].quant_table_selector);
CHECK_FAILED ((image->components[i].horizontal_factor <= 4 &&
image->components[i].vertical_factor <= 4 &&
image->components[i].quant_table_selector < 4),
GST_JPEG_PARSER_FRAME_ERROR);
}
return GST_JPEG_PARSER_OK;
failed:
return GST_JPEG_PARSER_FRAME_ERROR;
wrong_state:
return result;
}
static GstJpegParserResult
jpeg_parse_scan (GstJpegImage * image, const guint8 * buf, guint32 length)
{
GstByteReader bytes_reader = GST_BYTE_READER_INIT (buf, length);
GstJpegParserResult result = GST_JPEG_PARSER_OK;
guint8 val;
u_int i;
g_assert (image && buf && length);
READ_UINT8 (&bytes_reader, image->current_scan.num_components);
CHECK_FAILED (image->current_scan.num_components <= GST_JPEG_MAX_COMPONENTS,
GST_JPEG_PARSER_SCAN_ERROR);
for (i = 0; i < image->current_scan.num_components; i++) {
READ_UINT8 (&bytes_reader,
image->current_scan.components[i].component_selector);
READ_UINT8 (&bytes_reader, val);
image->current_scan.components[i].dc_selector = (val >> 4) & 0x0F;
image->current_scan.components[i].ac_selector = val & 0x0F;
g_assert (image->current_scan.components[i].dc_selector < 4 &&
image->current_scan.components[i].ac_selector < 4);
CHECK_FAILED ((image->current_scan.components[i].dc_selector < 4 &&
image->current_scan.components[i].ac_selector < 4),
GST_JPEG_PARSER_SCAN_ERROR);
}
return GST_JPEG_PARSER_OK;
failed:
return GST_JPEG_PARSER_SCAN_ERROR;
wrong_state:
return result;
}
static GstJpegParserResult
jpeg_parse_huffman_tables (GstJpegImage * image, const guint8 * buf,
guint32 length)
{
GstByteReader bytes_reader = GST_BYTE_READER_INIT (buf, length);
GstJpegParserResult result = GST_JPEG_PARSER_OK;
GstJpegHuffmanTable *huf_table;
guint8 tmp_val;
gboolean is_dc;
guint8 table_index;
guint32 value_count;
u_int i;
g_assert (image && buf && length);
while (gst_byte_reader_get_remaining (&bytes_reader)) {
READ_UINT8 (&bytes_reader, tmp_val);
is_dc = !((tmp_val >> 4) & 0x0F);
table_index = (tmp_val & 0x0F);
CHECK_FAILED (table_index < GST_JPEG_MAX_COMPONENTS,
GST_JPEG_PARSER_HUFFMAN_ERROR);
if (is_dc) {
huf_table = &image->dc_huf_tables[table_index];
} else {
huf_table = &image->ac_huf_tables[table_index];
}
READ_BYTES (&bytes_reader, huf_table->huf_bits, 16);
value_count = 0;
for (i = 0; i < 16; i++)
value_count += huf_table->huf_bits[i];
READ_BYTES (&bytes_reader, huf_table->huf_values, value_count);
}
return GST_JPEG_PARSER_OK;
failed:
return GST_JPEG_PARSER_HUFFMAN_ERROR;
wrong_state:
return result;
}
static GstJpegParserResult
jpeg_parse_quantization_table (GstJpegImage * image, const guint8 * buf,
guint32 length)
{
GstByteReader bytes_reader = GST_BYTE_READER_INIT (buf, length);
GstJpegParserResult result = GST_JPEG_PARSER_OK;
GstJpegQuantTable *quant_table;
guint8 val;
guint8 table_index;
g_assert (image && buf && length);
while (gst_byte_reader_get_remaining (&bytes_reader)) {
READ_UINT8 (&bytes_reader, val);
table_index = (val & 0x0f);
CHECK_FAILED (table_index < GST_JPEG_MAX_COMPONENTS,
GST_JPEG_PARSER_QUANT_ERROR);
quant_table = &(image->quant_tables[table_index]);
quant_table->quant_precision = ((val >> 4) & 0x0f);
if (!quant_table->quant_precision) { /* 8-bit values */
READ_BYTES (&bytes_reader, quant_table->quant_table, 64);
} else { /* 16-bit values */
READ_BYTES (&bytes_reader, quant_table->quant_table, 128);
}
}
return GST_JPEG_PARSER_OK;
failed:
return GST_JPEG_PARSER_QUANT_ERROR;
wrong_state:
return result;
}
static GstJpegParserResult
jpeg_parse_restart_interval (GstJpegImage * image, const guint8 * buf,
guint32 length)
{
GstByteReader bytes_reader = GST_BYTE_READER_INIT (buf, length);
guint16 interval;
g_assert (image && buf && length);
READ_UINT16 (&bytes_reader, interval);
image->restart_interval = interval;
return GST_JPEG_PARSER_OK;
failed:
return GST_JPEG_PARSER_QUANT_ERROR;
}
static GstJpegParserResult
jpeg_parse_comments (GstJpegImage * image, const guint8 * buf, guint32 length)
{
g_assert (image);
#if DEBUG_PRINT_COMMENT
char *comments = (char *) g_malloc0 (length + 1);
memcpy (comments, buf, length);
comments[length] = '\0';
GST_DEBUG ("jpeg comments:%s\n", comments);
g_free (comments);
#endif
return GST_JPEG_PARSER_OK;
}
static void
jpeg_set_default_huffman_tables (GstJpegImage * image)
{
/* luma */
memcpy (image->dc_huf_tables[0].huf_bits, default_dc_luma_bits, 16);
memcpy (image->dc_huf_tables[0].huf_values, default_dc_luma_vals, 16);
memcpy (image->ac_huf_tables[0].huf_bits, default_ac_luma_bits, 16);
memcpy (image->ac_huf_tables[0].huf_values, default_ac_luma_vals, 256);
/* chroma */
memcpy (image->dc_huf_tables[1].huf_bits, default_dc_chroma_bits, 16);
memcpy (image->dc_huf_tables[1].huf_values, default_dc_chroma_vals, 16);
memcpy (image->ac_huf_tables[1].huf_bits, default_ac_chroma_bits, 16);
memcpy (image->ac_huf_tables[1].huf_values, default_ac_chroma_vals, 256);
}
static void
jpeg_set_default_quantization_tables (GstJpegImage * image)
{
/* luma */
image->quant_tables[0].quant_precision = 0;
memcpy (image->quant_tables[0].quant_table, default_quant_luma_zigzag, 64);
/* chroma */
image->quant_tables[1].quant_precision = 0;
memcpy (image->quant_tables[1].quant_table, default_quant_chroma_zigzag, 64);
}
GstJpegParserResult
gst_jpeg_parse_image (GstJpegImage * image, const guint8 * buf, guint32 size)
{
GstByteReader bytes_reader;
GstJpegParserResult result = GST_JPEG_PARSER_OK;
guint8 marker;
guint16 header_length;
const guint8 *header_buf;
gboolean first_scan_reached = FALSE;
gboolean has_huffman_tables = FALSE, has_quant_tables = FALSE;
g_assert (image && buf && size);
memset (image, 0, sizeof (GstJpegImage));
gst_byte_reader_init (&bytes_reader, buf, size);
/* read SOI */
CHECK_FAILED (jpeg_parse_to_next_marker (&bytes_reader, &marker)
&& GST_JPEG_SOI == marker, GST_JPEG_PARSER_NOT_JPEG);
image->jpeg_begin = buf + gst_byte_reader_get_pos (&bytes_reader) - 2;
image->jpeg_end = buf + size;
while (jpeg_parse_to_next_marker (&bytes_reader, &marker)) {
if (marker >= GST_JPEG_SOF0 && marker <= GST_JPEG_SOFF
&& marker != GST_JPEG_DHT && marker != GST_JPEG_DAC) {
g_assert (marker == GST_JPEG_SOF0);
if (marker > GST_JPEG_SOF0) {
GST_WARNING ("codecparser_jpeg cannot support this image type:%02x",
marker);
result = GST_JPEG_PARSER_UNSUPPORTED_PROFILE;
goto wrong_state;
}
image->frame_type = marker;
marker = GST_JPEG_SOF0;
}
if (marker == GST_JPEG_EOI) {
image->jpeg_end = buf + gst_byte_reader_get_pos (&bytes_reader);
break;
} else {
READ_UINT16 (&bytes_reader, header_length);
CHECK_FAILED ((header_length >= 2 &&
gst_byte_reader_get_remaining (&bytes_reader) + 2 >=
header_length), GST_JPEG_PARSER_BROKEN_DATA);
header_length -= 2;
header_buf = buf + gst_byte_reader_get_pos (&bytes_reader);
}
switch (marker) {
case GST_JPEG_SOF0:
JPEG_RESULT_CHECK (result =
jpeg_parse_frame (image, header_buf, header_length));
break;
case GST_JPEG_DHT:
JPEG_RESULT_CHECK (result =
jpeg_parse_huffman_tables (image, header_buf, header_length));
has_huffman_tables = TRUE;
break;
case GST_JPEG_SOS:
JPEG_RESULT_CHECK (result =
jpeg_parse_scan (image, header_buf, header_length));
first_scan_reached = TRUE; /* read to first scan stop */
break;
case GST_JPEG_DQT:
JPEG_RESULT_CHECK (result =
jpeg_parse_quantization_table (image, header_buf, header_length));
has_quant_tables = TRUE;
break;
case GST_JPEG_DRI:
JPEG_RESULT_CHECK (result =
jpeg_parse_restart_interval (image, header_buf, header_length));
break;
case GST_JPEG_COM:
JPEG_RESULT_CHECK (result =
jpeg_parse_comments (image, header_buf, header_length));
break;
case GST_JPEG_DAC:
case GST_JPEG_DNL:
default:
/* Unsupported markers, skip them */
break;
}
gst_byte_reader_skip (&bytes_reader, header_length);
if (first_scan_reached)
break;
}
image->jpeg_pos = buf + gst_byte_reader_get_pos (&bytes_reader);
if (!first_scan_reached) {
GST_WARNING ("jpeg no scan was found\n");
return GST_JPEG_PARSER_NO_SCAN_FOUND;
}
if (!has_huffman_tables)
jpeg_set_default_huffman_tables (image);
if (!has_quant_tables)
jpeg_set_default_quantization_tables (image);
return GST_JPEG_PARSER_OK;
failed:
GST_WARNING ("jpeg parsing read broken data");
return GST_JPEG_PARSER_BROKEN_DATA;
wrong_state:
return result;
}
GstJpegParserResult
gst_jpeg_parse_next_scan (GstJpegImage * image)
{
GstByteReader bytes_reader;
GstJpegParserResult result = GST_JPEG_PARSER_OK;
guint8 marker;
guint16 header_length;
const guint8 *header_buf;
gboolean scan_found = FALSE;
g_assert (image->jpeg_begin && image->jpeg_end && image->jpeg_pos);
if (!image->jpeg_begin || !image->jpeg_end || !image->jpeg_pos
|| image->jpeg_pos >= image->jpeg_end)
return GST_JPEG_PARSER_NO_SCAN_FOUND;
gst_byte_reader_init (&bytes_reader, image->jpeg_pos,
image->jpeg_end - image->jpeg_pos);
while (jpeg_parse_to_next_marker (&bytes_reader, &marker)) {
if (marker == GST_JPEG_EOI) {
image->jpeg_end =
image->jpeg_pos + gst_byte_reader_get_pos (&bytes_reader);
break;
}
if (marker != GST_JPEG_SOS)
continue;
READ_UINT16 (&bytes_reader, header_length);
CHECK_FAILED ((header_length >= 2 &&
gst_byte_reader_get_remaining (&bytes_reader) + 2 >= header_length),
GST_JPEG_PARSER_SCAN_ERROR);
header_length -= 2;
header_buf = image->jpeg_pos + gst_byte_reader_get_pos (&bytes_reader);
JPEG_RESULT_CHECK (result =
jpeg_parse_scan (image, header_buf, header_length));
scan_found = TRUE;
break;
}
image->jpeg_pos += gst_byte_reader_get_pos (&bytes_reader);
if (!scan_found)
return GST_JPEG_PARSER_NO_SCAN_FOUND;
return GST_JPEG_PARSER_OK;
failed:
GST_WARNING ("jpeg parsing read broken data");
return GST_JPEG_PARSER_BROKEN_DATA;
wrong_state:
return result;
}
guint32
gst_jpeg_skip_to_scan_end (GstJpegImage * image)
{
GstByteReader bytes_reader;
guint8 marker;
guint32 skip_bytes = 0;
gboolean next_marker_found = FALSE;
g_assert (image->jpeg_begin && image->jpeg_end && image->jpeg_pos);
if (!image->jpeg_begin || !image->jpeg_end || !image->jpeg_pos
|| image->jpeg_pos >= image->jpeg_end)
return 0;
gst_byte_reader_init (&bytes_reader, image->jpeg_pos,
image->jpeg_end - image->jpeg_pos);
while (jpeg_parse_to_next_marker (&bytes_reader, &marker)) {
if (marker >= GST_JPEG_RST0 && marker <= GST_JPEG_RST7)
continue;
next_marker_found = TRUE;
break;
}
if (next_marker_found)
skip_bytes = gst_byte_reader_get_pos (&bytes_reader) - 2;
else
skip_bytes = gst_byte_reader_get_pos (&bytes_reader);
image->jpeg_pos += skip_bytes;
return skip_bytes;
}
const guint8 *
gst_jpeg_get_position (GstJpegImage * image)
{
return image->jpeg_pos;
}
guint32
gst_jpeg_get_left_size (GstJpegImage * image)
{
if (image->jpeg_end > image->jpeg_pos)
return image->jpeg_end - image->jpeg_pos;
return 0;
}

120
gst-libs/gst/codecparsers/gstjpegparser.h Normal file
View file

@ -0,0 +1,120 @@
/*
* gstjpegparser.h - JPEG parser for baseline
*
* Copyright (C) 2011 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef GST_JPEG_PARSER_H
#define GST_JPEG_PARSER_H
#ifndef GST_USE_UNSTABLE_API
# warning "The JPEG parsing library is unstable API and may change in future."
# warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
#endif
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_JPEG_MAX_COMPONENTS 4
#define GST_JPEG_QUANT_ELEMENTS_SIZE 64
typedef struct _GstJpegQuantTable GstJpegQuantTable;
typedef struct _GstJpegHuffmanTable GstJpegHuffmanTable;
typedef struct _GstJpegScan GstJpegScan;
typedef struct _GstJpegImage GstJpegImage;
typedef enum
{
GST_JPEG_PARSER_OK,
GST_JPEG_PARSER_UNSUPPORTED_PROFILE,
GST_JPEG_PARSER_NOT_JPEG,
GST_JPEG_PARSER_BROKEN_DATA,
GST_JPEG_PARSER_NO_SCAN_FOUND,
GST_JPEG_PARSER_FRAME_ERROR,
GST_JPEG_PARSER_SCAN_ERROR,
GST_JPEG_PARSER_HUFFMAN_ERROR,
GST_JPEG_PARSER_QUANT_ERROR,
GST_JPEG_PARSER_DRI_ERROR,
} GstJpegParserResult;
struct _GstJpegQuantTable
{
guint8 quant_precision; /* 4 bits; Value 0 indicates 8bit Q values; value 1 indicates 16bit Q values */
guint8 quant_table[GST_JPEG_QUANT_ELEMENTS_SIZE * 2]; /* 64*8(or 64*16) bits, zigzag mode */
};
struct _GstJpegHuffmanTable
{
guint8 huf_bits[16];
guint8 huf_values[256];
};
struct _GstJpegScan
{
guint8 num_components; /* 8 bits */
struct
{
guint8 component_selector; /* 8 bits */
guint8 dc_selector; /* 4 bits */
guint8 ac_selector; /* 4 bits */
} components[GST_JPEG_MAX_COMPONENTS];
};
struct _GstJpegImage
{
guint32 frame_type;
guint8 sample_precision; /* 8 bits */
guint16 height; /* 16 bits */
guint16 width; /* 16 bits */
guint8 num_components; /* 8 bits */
struct
{
guint8 identifier; /* 8 bits */
guint8 horizontal_factor; /* 4 bits */
guint8 vertical_factor; /* 4 bits */
guint8 quant_table_selector; /* 8 bits */
} components[GST_JPEG_MAX_COMPONENTS];
GstJpegQuantTable quant_tables[GST_JPEG_MAX_COMPONENTS];
GstJpegHuffmanTable dc_huf_tables[GST_JPEG_MAX_COMPONENTS];
GstJpegHuffmanTable ac_huf_tables[GST_JPEG_MAX_COMPONENTS];
guint32 restart_interval; /* DRI */
GstJpegScan current_scan;
const guint8 *jpeg_pos;
const guint8 *jpeg_begin;
const guint8 *jpeg_end;
};
/* parse to first scan and stop there */
GstJpegParserResult gst_jpeg_parse_image (GstJpegImage * image,
const guint8 * buf,
guint32 size);
GstJpegParserResult gst_jpeg_parse_next_scan (GstJpegImage * image);
/* return skip bytes length */
guint32 gst_jpeg_skip_to_scan_end (GstJpegImage * image);
const guint8 * gst_jpeg_get_position (GstJpegImage * image);
guint32 gst_jpeg_get_left_size (GstJpegImage * image);
G_END_DECLS
#endif /* GST_JPEG_PARSER_H */

5
gst-libs/gst/vaapi/Makefile.am
View file

@ -170,6 +170,11 @@ libgstvaapi_cflags += $(GST_CODEC_PARSERS_CFLAGS)
libgstvaapi_libs += $(GST_CODEC_PARSERS_LIBS)
endif
if USE_LOCAL_CODEC_PARSERS
libgstvaapi_libs += \
$(top_builddir)/gst-libs/gst/codecparsers/libgstvaapi-codecparsers.la
endif
libgstvaapi_@GST_MAJORMINOR@_la_SOURCES = \
$(libgstvaapi_source_c) \
$(libgstvaapi_source_priv_h) \